Stability Analysis of Subgrade on Slope in the Event of Rainstormat the Permafrost Region

摘要

There is a potential threat to long-period operation in the sector of embankment upon the slope, and it is an adverse factor to develop the subgrade in the southern limit area of permafrost. Stability of embankment of Qinghai-Tibet railway on slope is analyzed in the event of rainstorm in the paper based on the result of infiltrated calculation. Consequently, the minimal of the stability factor is found after about two days of rain, not at the moment of rain-stop.